4-Bromo-3-nitro-2-(trifluoromethoxy)pyridine-6-carboxaldehyde
4-Bromo-2-nitro-6-(trifluoromethoxy)pyridine-3-carboxaldehyde
6-Chloro-2-cyano-3-(difluoromethyl)-4-(trifluoromethoxy)pyridine
3-Bromo-5-nitro-2-(trifluoromethoxy)pyridine-6-carboxaldehyde